以下代碼假定idno(主鍵)繼續並從1開始。
但是,我將該ID設置爲自動增量和可刪除。
隨着時間的推移,idno可能不會從1開始,可能會停止。
我該如何修改代碼來應對這種情況?MYSQL:如何「重新排序」與已停用的idno表?
的jQuery:
$(document).ready(function(){
function slideout(){
setTimeout(function(){
$("#response").slideUp("slow", function() {
});
}, 2000);
}
$("#response").hide();
$(function() {
$("#list ul").sortable({ opacity: 0.8, cursor: 'move', update: function() {
var order = $(this).sortable("serialize") + '&update=update';
$.post("updateList.php", order, function(theResponse){
$("#response").html(theResponse);
$("#response").slideDown('slow');
slideout();
});
}
});});});
HTML
<body>
<div id="container">
<div id="list">
<div id="response"> </div>
<ul>
<?php
include("connect.php");
// $query = "SELECT id, text FROM dragdrop ORDER BY listorder ASC";
$query = "SELECT id, name, type FROM project_list ORDER BY 'order' ASC";
$result = mysql_query($query);
while($row = mysql_fetch_array($result, MYSQL_ASSOC))
{
$id = stripslashes($row['id']);
$name = stripslashes($row['name']);
$type = stripslashes($row['type']);
?>
<li id="arrayorder_<?php echo $id ?>"> <?php echo $name?> <?php echo $type; ?>
<div class="clear"></div>
</li>
<?php
}
?>
</ul>
</div>
</div>
</body>
updateList.php
<?php
include("connect.php");
$array = $_POST['arrayorder'];
if ($_POST['update'] == "update") {
$count = 1;
foreach ($array as $idval) {
$query = "UPDATE project_list SET 'order' = " . $count . " WHERE id = " . $idval;
mysql_query($query) or die('Error, insert query failed');
$count ++;
}
echo 'Updated!';
}
?>
此代碼有一個錯誤:'「SELECT id,name,type FROM project_list ORDER BY'order'ASC」'。使用反引號'而不是正常的蜱蟲。 – Johan 2011-06-06 17:56:13